
Multiple Choice Questions on Vapour Compression Cycle
Authored by Jiban Kalita
Engineering
University
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a vapour compression cycle, the refrigerant enters the compressor as:
Saturated liquid
Wet vapour
Superheated vapour
Subcooled liquid
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In an ideal vapour compression cycle, heat rejection takes place in the:
Evaporator
Condenser
Compressor
Expansion valve
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The expansion device in a vapour compression cycle is usually a:
Turbine
Throttle valve
Reciprocating piston
Diffuser
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In an ideal vapour compression cycle, compression is assumed to be:
Isothermal
Isobaric
Adiabatic and reversible (isentropic)
Polytropic
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The main function of the evaporator is to:
Reject heat
Absorb heat from surroundings
Compress refrigerant
Expand refrigerant
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The coefficient of performance (COP) of a vapour compression cycle is given by:
Work input / Heat output
Heat absorbed in evaporator / Work input
Work output / Heat rejected
Heat rejected / Work input
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a vapour compression cycle, subcooling of liquid refrigerant before expansion:
Decreases COP
Increases COP
Has no effect
Decreases refrigerating effect
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